Hinge



(No Model.)

A. S. BLAKE.

HINGE.

Patented May 20, 1884.

nirr'nn h'rn'rns Patent rrrcn.

AMOS S. BLAKE, OF VATERBURY, CONNECTICUT.

HINGE.

SPECIFICATION forming part of Letters Patent No. 298,724, dated May 20,1884:. Application filed March 3, 1884. (No model.)

To aZZ whom it may concern..-

Be it known that I, AMOS S. BLAKE, of Va terbury, in the county of NewHaven and State of Connecticut, have invented a new Improvement inSelf-Closing Hinges; and I do hereby declare the following, when takenin connection with accompanying drawings, and the letters of referencemarked thereon, to be a full, clear, and exact description of the same,and which said drawings constitute part of this specification, andrepresent, in-

Figure 1, a perspective view; Fig. 2, a top view; Fig. 3, a rear view,showing the parts in an open position.

This invention relates to an improvement in common slip-joint hinges,the object being to construct the hinge so that it may be used as aself-closing hinge, and without interfering with its use as a commonbutt-hinge when de sired; and the invention consists in constructingeach part of the hinge with an arm projecting diagonally from it, thearm on the one in direction opposite to the arm on the other, combinedwith a rod of greater length than the distance between the two arms, itsends set in a socket in the respective arms, and whereby, as the hingeis turned upon its pintle, tending to bring the arms into the samevertical plane,

- the rod will cause the one part of the hinge to rise upon the pintleas the rod approaches the perpendicular; but when free the weight uponthe one part of the hinge will tend to force that part downward; but,resting upon the rod in its inclined position, the downward force orweight will cause the hinge to turn upon its pintle into the closedposition, and as more fullyhereinaftcr described.

A represents the one part, and B the other part, of a common slip-j ointhinge, the knuckle C of the one part, 13, provided with the usualpintle, a, (indicated in broken lines, Fig. 1,) the other part with alike knuckle, D, provided with a seat for the pintle, and so that theone.

part may slip upon the other. From the one knuckle, D, an arm, E,extends diagonally, and from the other knuckle, C, a like arm, F,extends in the opposite direction. These arms are best formed at theextreme end of the knuckles. Each arm is constructed with a cavity, 6,upon its face toward the other arm.

These arms, when the two parts are set together, project the one to theright and the other to the left, as seen in Fig. 2, so that the cavitiesI) come one upon the one side of the pintle and the other upon theopposite side, as seen in Fig. 1.

G is a straight rod, in length corresponding to the distance between thetwo cavities b b when the hinge is in its closed position, and is setone end into one cavity and the other end into the other cavity, as seenin Fig. 1, and so that its two ends are seated respcctivelyin saidcavities. In this condition the rod stands diagonally to the pintle. Asthe hinge is opehed, one arm, IE, will approach a position over theother arm, F, and in so doing will turn the rod toward its verticalposition, as seen in Fig. 3, and, because the rod G is longer than thedistance vertically between the two :arms,

it will cause the one part, B, of the hinge to rise from the other, asseen in Fig. 3. Then, if the hinge be left free, the weight upon thepart which was raised will come upon the rod G, and, because of theinclined position of the rod, that weight will tend to force the rod inthe direction of its inclination and until the hinge be closed. Thus theweight which, in opening, is lifted serves as a weight to close thehinge. If, in opening, the hinge be turned so far as to cause the rod topass the perpendicular, then the tendency of the weight will be to throwit in the opposite or open direction.

The hinge is applied to a door in the usual manner, and in positionswhere the door may be opened beyond the point which will bring the rodto the opposite inclination, the same hinge may serve to hold the doorwide open, as well as to close the door when, in returning the door, therod passes the vertical position.

If the self-closing device is not required, it is only necessary toraise the door upon its hinges, so as to permit the removal of the rodG. That removed, the hinge operates the same as a common slip-jointbutt-hinge. Another advantage of this construction is that the wear upon the meeting-faces of the knuckle is avoided, for so soon as the hingecommences to turn the one part of the knuckle is raised from the other,thus avoiding the rubbing wear between the two knuckles.

WVhile designed specially for a butt-hinge, bined with the rod G, oneend seated in the the invention is applicable to any slip-joint cavityof one arm, the other in the cavity of hinge. the opposite arm, and sothat the said rod, when I claim the hinge is in its closed position,stands diago- 5 A slip-joint hinge having the one part connally acrossthe plane of the pintle, snbstan- 15 strncted with an arm, E, extendingdiagonally tially as described.

therefrom, the other part with a correspond- AMOS S. BLAKE. ing part, F,extending diagonally therefrom WVitnesses: in the opposite direction tothe arm E, each of WM. WV. BONNETT,

10 said arms constructed with a cavity, 1), com- NELSONJ. VVELTON,

